
  *{
    margin: 0;
    padding: 0;
    list-style: none;
    font-family: Arial, sans-serif;
}
body {
    font-family: Arial;
    background: #f1f1f1;
  }
a{
    text-decoration: none;
    color: rgb(68, 123, 103);
}   
h2{
    font-size: 1.5rem;
    text-align: center;
    color: rgb(68, 123, 103);
    padding: 10px;
}
.backClass{
    padding: 10px;
    background-color:#4CAF50; 
    border-radius: 20%;
    position: fixed;
    left: 20;
    margin: 1.333333vw;
}
.backClass a{
 color: white;
}
header,footer{
    
            background-color: rgb(231, 245, 235);
}

        header, footer,main {
            margin: auto;
            width: 80%;
            color: rgb(68, 123, 103);
            text-align: center;
            padding: 1rem 0;
        }
        nav ul {
            list-style: none;
            padding: 0;
        }
        nav ul li {
            display: inline;
            margin: 0 1rem;
        }
        nav ul li a {
            color: rgb(68, 123, 103);
            text-decoration: none;
        }
        .content1_div{
    width: 100%;
    background-color: rgb(231, 245, 235);
    padding: 30px 0px 10px 0px;
}
div ul {
    /* width: 70%; */
    margin: auto;
    display: flex
;
    flex-wrap: wrap;
    justify-content: space-between;
}
.content1_div ul li {
    width: 180px;
    height: 100px;
    margin-bottom: 20px;
}
        @media (max-width: 768px) {
 .content1_div ul{
        justify-content: center!important;
    }
        }
        @media (max-width: 480px) {
             .content1_div ul{
        justify-content: center!important;
    }
        }
        nav a{
            padding: 10px;
            border-radius: 10px;
        }
nav a:hover{
    color: #ddd;
    background-color: #4CAF50;
    /* 或者对于注册按钮: #1e88e5（稍暗的蓝色） */
    transform: scale(1.05); /* 稍微放大按钮 */
}
main h2{
    margin: 40px 0 20px 0;
}
.fakeimg {
  background-color:rgb(231, 245, 235);
    padding:5px;
  width: 100%;
            white-space: pre-wrap;
            overflow: hidden;
            text-overflow: ellipsis;
            font-family: 楷体;
            /* height: 1666px; */
}
#about p{
    font-size: 19px;
    line-height: 35px;
}
#content_image{
    width: 70% ;
}
#content_image li{
    overflow: hidden;
    box-shadow:
            3px 3px 5px rgba(61, 119, 98, 0.5), /* 主阴影，稍微偏移并模糊 */
            -3px -3px 10px rgba(255, 255, 255, 0.3), /* 高光效果，使阴影看起来更立体 */
            inset -2px -2px 5px rgba(0, 0, 0, 0.1), /* 内嵌阴影，增加内部深度 */
            inset 2px 2px 10px rgba(255, 255, 255, 0.5); /* 内嵌高光，增加内部光泽 */
    /* 其他样式属性 */
}
#content_image li img{
    margin-top: -26px;
    width: 100% ;

}